Question: Who was married to Lynn Margulis in June of 1957?
Paraphrase: Whom did Lynn Margulis marry in June of 1957?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q234583 p:P26 ?s . ?s ps:P26 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1957')) }